Exploring the Relationship of Sleep-related Movement Disorders with Cerebrovascular Disease

• Main Author: Boulos, Mark Iskander
• Other Authors: Swartz, Richard H
• Language: en_ca
• Published: 2014
• Subjects: cerebrovascular disease; stroke; transient ischemic attack; periodic limb movements; Restless Legs Syndrome; neuroimaging; sleep; white matter hyperintensities; MRI; 0564
• Online Access: http://hdl.handle.net/1807/65536

INTRODUCTION: The association of Sleep-Related Movement Disorders (SRMDs) such as Restless Legs Syndrome (RLS) and Periodic Limb Movements (PLMs) with cerebrovascular disease is underexplored. Emerging evidence links them to vascular disease, for which white matter hyperintensities (WMHs) are a well-recognized biomarker. METHODS: We conducted a cross-sectional hospital-based observational study in which high-risk TIA and minor stroke patients were assessed for vascular risk factors, WMHs and polysomnography-determined sleep variables. RESULTS: Ninety-seven patients were enrolled, of whom 44 completed polysomnography. Twenty-five percent had RLS, which was associated with lower quality of life. Independent of the effect of classical vascular risk factors, PLMs (but not RLS) were associated with WMHs on linear regression analyses (p=0.016). CONCLUSIONS: SRMDs are prevalent after minor stroke/TIA. RLS is associated with poor quality of life, while PLMs are associated with WMHs. Whether PLMs are implicated in the pathogenesis of WMHs or whether WMHs exacerbate PLMs remains uncertain.